For this week, I have the new job to take over booking passenger to get accompaniment from the airline and service them to take them to the hotel. I learn about over booking. Over booking is about passenger that booking to fly with our airline but in the reason of marketing, they have to let passenger get over book seat for avoiding available seat. So the airline have to compensate passenger sometimes they are move passenger to the others airline but sometimes not available flight on that day. So the airline has to compensate passenger with money instead.